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Received: from AM9PR04MB8906.eurprd04.prod.outlook.com (2603:10a6:20b:409::9) by AM9PR04MB8619.eurprd04.prod.outlook.com (2603:10a6:20b:43a::22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8964.27; Tue, 29 Jul 2025 12:33:26 +0000 Received: from AM9PR04MB8906.eurprd04.prod.outlook.com ([fe80::d379:5378:b1:cea]) by AM9PR04MB8906.eurprd04.prod.outlook.com ([fe80::d379:5378:b1:cea%6]) with mapi id 15.20.8964.025; Tue, 29 Jul 2025 12:33:26 +0000 Message-ID: <926bdbca-09cc-4ce0-9855-c36f9a102210@nxp.com> Date: Tue, 29 Jul 2025 15:33:23 +0300 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3] remoteproc: imx_dsp_rproc: Add support of recovery and coredump process To: Shengjiu Wang Cc: Mathieu Poirier , Shengjiu Wang , Daniel Baluta , andersson@kernel.org, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, linux-remoteproc@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, jassisinghbrar@gmail.com References: <20250722075225.544319-1-shengjiu.wang@nxp.com> <12184ce7-e74b-48eb-abee-25f8a10a2423@nxp.com> Content-Language: en-US From: Iuliana Prodan In-Reply-To: Content-Type: text/plain; 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So move software reset from >>>>> imx_dsp_runtime_resume() to .load() and clear memory before loading >>>>> firmware to make recovery work. >>>>> >>>>> Add call rproc_coredump_set_elf_info() to initialize the elf info for >>>>> coredump, otherwise coredump will report error "ELF class is not set". >>>>> >>>>> Fixes: ec0e5549f358 ("remoteproc: imx_dsp_rproc: Add remoteproc driver for DSP on i.MX") >>>>> Signed-off-by: Shengjiu Wang >>>> >>>> Changes looks good to me: >> >> I agree, but this is not enough. >> >>>> >>>> Reviewed-by: Daniel Baluta >>>> >>>> I've tested it with Zephyr synchronization samples inducing a crash >>>> via debugfs interface. App >>>> can recover correctly. >> >> >> The synchronization sample does not utilize the Messaging Unit (MU) for >> communication between the two cores, its behavior is similar to the >> basic hello_world example (no fw_ready reply is expected by host). >> >> I’ve tested this patch with both the synchronization and hello_world >> samples, as well as with the default firmware specified in the device >> tree (imx/dsp/hifi4.bin), and everything works as expected. >> >> However, when testing with the openamp_rsc_table sample from Zephyr [1], >> I encountered the following issue: >> ``` >> [ 1500.964232] remoteproc remoteproc0: crash detected in imx-dsp-rproc: >> type watchdog >> [ 1500.964595] remoteproc remoteproc0: handling crash #1 in imx-dsp-rproc >> [ 1500.964608] remoteproc remoteproc0: recovering imx-dsp-rproc >> [ 1500.965959] remoteproc remoteproc0: stopped remote processor >> imx-dsp-rproc >> [ 1501.251897] remoteproc remoteproc0: can't start rproc imx-dsp-rproc: -110 >> ``` >> Upon debugging, I discovered that the issue stems from the imx-mailbox >> driver not clearing the General Purpose Interrupt (GPI) bits. This leads >> to the remote processor failing to restart properly. >> >> To ensure compatibility across all firmware variants, including those >> using OpenAMP, the attached patch is required. Both the recovery and >> mailbox patches have been successfully tested on the following >> platforms: i.MX8MP, i.MX8ULP, i.MX8QM and i.MX8QXP. >> >> Shengjiu, do you want to send a new version with both patches? > > No. it is a different issue. > You can send it to the mailbox maintainer for review. > Ok, sure. I can send it separately. Thanks, Iulia > Best regards > Shengjiu Wang > >> >> Thanks, >> Iulia >> >>> >>> Very good - I will merge this around 6.17-rc2 when I get back from vacation. >>> >>> Mathieu >>> >> >> [1] >> https://github.com/zephyrproject-rtos/zephyr/tree/main/samples/subsys/ipc/openamp_rsc_table